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The invention relates to a capacitor protection structure and a capacitor, and relates to the technical field of capacitors. The capacitor protection structure comprises a shell, an upper cover and an electrode terminal. One end of the shell is opened and an accommodating cavity is formed in the shell. A capacitor core group is arranged in the accommodating cavity. The upper cover is arranged at the opening end of the shell in a covering mode, and the upper cover is of a thin plate structure. The electrode terminal comprises a seat body and an insertion rod, the seat body is fixed in the accommodating cavity and is electrically connected with the capacitor core group, and one end of the insertion rod penetrates through the upper cover and is inserted into the seat body. When the upper cover protrudes, the upper cover can drive the plug to move towards a first direction, and the first direction corresponds to the direction, away from the base body, of the plug rod. The capacitor protection structure can improve the problem that explosion is easy to occur when the internal pressure of the capacitor is increased, and improves the safety of the capacitor.